/* eslint-disable max-len */

/* eslint-disable */
import ruleTrigger from "./ruleTrigger";

let confGlobal;
let someSpanIsNot24;

export function dialogWrapper(str) {
    return `<el-dialog v-bind="$attrs" v-on="$listeners" @open="onOpen" @close="onClose" title="Dialog Titile">
    ${str}
    <div slot="footer">
      <el-button @click="close">取消</el-button>
      <el-button type="primary" @click="handelConfirm">确定</el-button>
    </div>
  </el-dialog>`;
}

export function vueTemplate(str) {
    return `<template>
    <div>
      ${str}
    </div>
  </template>`;
}

export function vueScript(str) {
    return `<script>
    ${str}
  </script>`;
}

export function cssStyle(cssStr) {
    return `<style>
    ${cssStr}
  </style>`;
}

function buildFormTemplate(scheme, child, type) {
    let labelPosition = "";
    if (scheme.labelPosition !== "right") {
        labelPosition = `label-position="${scheme.labelPosition}"`;
    }
    const disabled = scheme.disabled ? `:disabled="${scheme.disabled}"` : "";
    let str = `<el-form ref="${scheme.formRef}" :model="${scheme.formModel}" :rules="${scheme.formRules}" size="${scheme.size}" ${disabled} label-width="${scheme.labelWidth}px" ${labelPosition}>
      ${child}
  
    </el-form>`;
    // ${buildFromBtns(scheme, type)}
    if (someSpanIsNot24) {
        str = `<el-row :gutter="${scheme.gutter}">
        ${str}
      </el-row>`;
    }
    return str;
}

function buildFromBtns(scheme, type) {
    let str = "";
    if (scheme.formBtns && type === "file") {
        str = `<el-form-item size="large">
          <el-button type="primary" @click="submitForm">提交</el-button>
          <el-button @click="resetForm">重置</el-button>
        </el-form-item>`;
        if (someSpanIsNot24) {
            str = `<el-col :span="24">
          ${str}
        </el-col>`;
        }
    }
    return str;
}

// span不为24的用el-col包裹
function colWrapper(scheme, str) {
    if (someSpanIsNot24 || scheme.__config__.span !== 24) {
        return `<el-col :span="${scheme.__config__.span}">
      ${str}
    </el-col>`;
    }
    return str;
}

const layouts = {
    colFormItem(scheme) {
        const config = scheme.__config__;
        let labelWidth = "";
        let label = `label="${config.label}"`;
        if (config.labelWidth && config.labelWidth !== confGlobal.labelWidth) {
            labelWidth = `label-width="${config.labelWidth}px"`;
        }
        if (config.showLabel === false) {
            labelWidth = 'label-width="0"';
            label = "";
        }
        const required = !ruleTrigger[config.tag] && config.required ? "required" : "";
        const tagDom = tags[config.tag] ? tags[config.tag](scheme) : null;
        let str = `<el-form-item ${labelWidth} ${label} prop="${scheme.__vModel__}" ${required}>
        ${tagDom}
      </el-form-item>`;
        str = colWrapper(scheme, str);
        return str;
    },
    rowFormItem(scheme) {
        const config = scheme.__config__;
        const type = scheme.type === "default" ? "" : `type="${scheme.type}"`;
        const justify = scheme.type === "default" ? "" : `justify="${scheme.justify}"`;
        const align = scheme.type === "default" ? "" : `align="${scheme.align}"`;
        const gutter = scheme.gutter ? `:gutter="${scheme.gutter}"` : "";
        const children = config.children.map((el) => layouts[el.__config__.layout](el));
        let str = `<el-row ${type} ${justify} ${align} ${gutter}>
      ${children.join("\n")}
    </el-row>`;
        str = colWrapper(scheme, str);
        return str;
    }
};

const tags = {
    "el-button": (el) => {
        const { tag, disabled } = attrBuilder(el);
        const type = el.type ? `type="${el.type}"` : "";
        const icon = el.icon ? `icon="${el.icon}"` : "";
        const round = el.round ? "round" : "";
        const size = el.size ? `size="${el.size}"` : "";
        const plain = el.plain ? "plain" : "";
        const circle = el.circle ? "circle" : "";
        let child = buildElButtonChild(el);

        if (child) child = `\n${child}\n`; // 换行
        return `<${tag} ${type} ${icon} ${round} ${size} ${plain} ${disabled} ${circle}>${child}</${tag}>`;
    },
    "el-input": (el) => {
        const { tag, disabled, vModel, clearable, placeholder, width } = attrBuilder(el);
        const maxlength = el.maxlength ? `:maxlength="${el.maxlength}"` : "";
        const showWordLimit = el["show-word-limit"] ? "show-word-limit" : "";
        const readonly = el.readonly ? "readonly" : "";
        const prefixIcon = el["prefix-icon"] ? `prefix-icon='${el["prefix-icon"]}'` : "";
        const suffixIcon = el["suffix-icon"] ? `suffix-icon='${el["suffix-icon"]}'` : "";
        const showPassword = el["show-password"] ? "show-password" : "";
        const type = el.type ? `type="${el.type}"` : "";
        const autosize =
            el.autosize && el.autosize.minRows ?
            `:autosize="{minRows: ${el.autosize.minRows}, maxRows: ${el.autosize.maxRows}}"` :
            "";
        let child = buildElInputChild(el);

        if (child) child = `\n${child}\n`; // 换行
        return `<${tag} ${vModel} ${type} ${placeholder} ${maxlength} ${showWordLimit} ${readonly} ${disabled} ${clearable} ${prefixIcon} ${suffixIcon} ${showPassword} ${autosize} ${width}>${child}</${tag}>`;
    },
    "el-input-number": (el) => {
        const { tag, disabled, vModel, placeholder } = attrBuilder(el);
        const controlsPosition = el["controls-position"] ? `controls-position=${el["controls-position"]}` : "";
        const min = el.min ? `:min='${el.min}'` : "";
        const max = el.max ? `:max='${el.max}'` : "";
        const step = el.step ? `:step='${el.step}'` : "";
        const stepStrictly = el["step-strictly"] ? "step-strictly" : "";
        const precision = el.precision ? `:precision='${el.precision}'` : "";

        return `<${tag} ${vModel} ${placeholder} ${step} ${stepStrictly} ${precision} ${controlsPosition} ${min} ${max} ${disabled}></${tag}>`;
    },
    "el-select": (el) => {
        const { tag, disabled, vModel, clearable, placeholder, width } = attrBuilder(el);
        const filterable = el.filterable ? "filterable" : "";
        const multiple = el.multiple ? "multiple" : "";
        let child = buildElSelectChild(el);

        if (child) child = `\n${child}\n`; // 换行
        return `<${tag} ${vModel} ${placeholder} ${disabled} ${multiple} ${filterable} ${clearable} ${width}>${child}</${tag}>`;
    },
    "el-radio-group": (el) => {
        const { tag, disabled, vModel } = attrBuilder(el);
        const size = `size="${el.size}"`;
        let child = buildElRadioGroupChild(el);

        if (child) child = `\n${child}\n`; // 换行
        return `<${tag} ${vModel} ${size} ${disabled}>${child}</${tag}>`;
    },
    "el-checkbox-group": (el) => {
        const { tag, disabled, vModel } = attrBuilder(el);
        const size = `size="${el.size}"`;
        const min = el.min ? `:min="${el.min}"` : "";
        const max = el.max ? `:max="${el.max}"` : "";
        let child = buildElCheckboxGroupChild(el);

        if (child) child = `\n${child}\n`; // 换行
        return `<${tag} ${vModel} ${min} ${max} ${size} ${disabled}>${child}</${tag}>`;
    },
    "el-switch": (el) => {
        const { tag, disabled, vModel } = attrBuilder(el);
        const activeText = el["active-text"] ? `active-text="${el["active-text"]}"` : "";
        const inactiveText = el["inactive-text"] ? `inactive-text="${el["inactive-text"]}"` : "";
        const activeColor = el["active-color"] ? `active-color="${el["active-color"]}"` : "";
        const inactiveColor = el["inactive-color"] ? `inactive-color="${el["inactive-color"]}"` : "";
        const activeValue = el["active-value"] !== true ? `:active-value='${JSON.stringify(el["active-value"])}'` : "";
        const inactiveValue =
            el["inactive-value"] !== false ? `:inactive-value='${JSON.stringify(el["inactive-value"])}'` : "";

        return `<${tag} ${vModel} ${activeText} ${inactiveText} ${activeColor} ${inactiveColor} ${activeValue} ${inactiveValue} ${disabled}></${tag}>`;
    },
    "el-cascader": (el) => {
        const { tag, disabled, vModel, clearable, placeholder, width } = attrBuilder(el);
        const options = el.options ? `:options="${el.__vModel__}Options"` : "";
        const props = el.props ? `:props="${el.__vModel__}Props"` : "";
        const showAllLevels = el["show-all-levels"] ? "" : ':show-all-levels="false"';
        const filterable = el.filterable ? "filterable" : "";
        const separator = el.separator === "/" ? "" : `separator="${el.separator}"`;

        return `<${tag} ${vModel} ${options} ${props} ${width} ${showAllLevels} ${placeholder} ${separator} ${filterable} ${clearable} ${disabled}></${tag}>`;
    },
    "el-slider": (el) => {
        const { tag, disabled, vModel } = attrBuilder(el);
        const min = el.min ? `:min='${el.min}'` : "";
        const max = el.max ? `:max='${el.max}'` : "";
        const step = el.step ? `:step='${el.step}'` : "";
        const range = el.range ? "range" : "";
        const showStops = el["show-stops"] ? `:show-stops="${el["show-stops"]}"` : "";

        return `<${tag} ${min} ${max} ${step} ${vModel} ${range} ${showStops} ${disabled}></${tag}>`;
    },
    "el-time-picker": (el) => {
        const { tag, disabled, vModel, clearable, placeholder, width } = attrBuilder(el);
        const startPlaceholder = el["start-placeholder"] ? `start-placeholder="${el["start-placeholder"]}"` : "";
        const endPlaceholder = el["end-placeholder"] ? `end-placeholder="${el["end-placeholder"]}"` : "";
        const rangeSeparator = el["range-separator"] ? `range-separator="${el["range-separator"]}"` : "";
        const isRange = el["is-range"] ? "is-range" : "";
        const format = el.format ? `format="${el.format}"` : "";
        const valueFormat = el["value-format"] ? `value-format="${el["value-format"]}"` : "";
        const pickerOptions = el["picker-options"] ? `:picker-options='${JSON.stringify(el["picker-options"])}'` : "";

        return `<${tag} ${vModel} ${isRange} ${format} ${valueFormat} ${pickerOptions} ${width} ${placeholder} ${startPlaceholder} ${endPlaceholder} ${rangeSeparator} ${clearable} ${disabled}></${tag}>`;
    },
    "el-date-picker": (el) => {
        const { tag, disabled, vModel, clearable, placeholder, width } = attrBuilder(el);
        const startPlaceholder = el["start-placeholder"] ? `start-placeholder="${el["start-placeholder"]}"` : "";
        const endPlaceholder = el["end-placeholder"] ? `end-placeholder="${el["end-placeholder"]}"` : "";
        const rangeSeparator = el["range-separator"] ? `range-separator="${el["range-separator"]}"` : "";
        const format = el.format ? `format="${el.format}"` : "";
        const valueFormat = el["value-format"] ? `value-format="${el["value-format"]}"` : "";
        const type = el.type === "date" ? "" : `type="${el.type}"`;
        const readonly = el.readonly ? "readonly" : "";

        return `<${tag} ${type} ${vModel} ${format} ${valueFormat} ${width} ${placeholder} ${startPlaceholder} ${endPlaceholder} ${rangeSeparator} ${clearable} ${readonly} ${disabled}></${tag}>`;
    },
    "el-rate": (el) => {
        const { tag, disabled, vModel } = attrBuilder(el);
        const max = el.max ? `:max='${el.max}'` : "";
        const allowHalf = el["allow-half"] ? "allow-half" : "";
        const showText = el["show-text"] ? "show-text" : "";
        const showScore = el["show-score"] ? "show-score" : "";

        return `<${tag} ${vModel} ${max} ${allowHalf} ${showText} ${showScore} ${disabled}></${tag}>`;
    },
    "el-color-picker": (el) => {
        const { tag, disabled, vModel } = attrBuilder(el);
        const size = `size="${el.size}"`;
        const showAlpha = el["show-alpha"] ? "show-alpha" : "";
        const colorFormat = el["color-format"] ? `color-format="${el["color-format"]}"` : "";

        return `<${tag} ${vModel} ${size} ${showAlpha} ${colorFormat} ${disabled}></${tag}>`;
    },
    "el-upload": (el) => {
        const { tag } = el.__config__;
        const disabled = el.disabled ? ":disabled='true'" : "";
        const action = el.action ? `:action="${el.__vModel__}Action"` : "";
        const multiple = el.multiple ? "multiple" : "";
        const listType = el["list-type"] !== "text" ? `list-type="${el["list-type"]}"` : "";
        const accept = el.accept ? `accept="${el.accept}"` : "";
        const name = el.name !== "file" ? `name="${el.name}"` : "";
        const autoUpload = el["auto-upload"] === false ? ':auto-upload="false"' : "";
        const beforeUpload = `:before-upload="${el.__vModel__}BeforeUpload"`;
        const fileList = `:file-list="${el.__vModel__}fileList"`;
        const ref = `ref="${el.__vModel__}"`;
        let child = buildElUploadChild(el);

        if (child) child = `\n${child}\n`; // 换行
        return `<${tag} ${ref} ${fileList} ${action} ${autoUpload} ${multiple} ${beforeUpload} ${listType} ${accept} ${name} ${disabled}>${child}</${tag}>`;
    },
    tinymce: (el) => {
        const { tag, vModel, placeholder } = attrBuilder(el);
        const height = el.height ? `:height="${el.height}"` : "";
        const branding = el.branding ? `:branding="${el.branding}"` : "";
        return `<${tag} ${vModel} ${placeholder} ${height} ${branding}></${tag}>`;
    }
};

function attrBuilder(el) {
    return {
        tag: el.__config__.tag,
        vModel: `v-model="${confGlobal.formModel}.${el.__vModel__}"`,
        clearable: el.clearable ? "clearable" : "",
        placeholder: el.placeholder ? `placeholder="${el.placeholder}"` : "",
        width: el.style && el.style.width ? ":style=\"{width: '100%'}\"" : "",
        disabled: el.disabled ? ":disabled='true'" : ""
    };
}

// el-buttin 子级
function buildElButtonChild(scheme) {
    const children = [];
    const slot = scheme.__slot__ || {};
    if (slot.default) {
        children.push(slot.default);
    }
    return children.join("\n");
}

// el-input 子级
function buildElInputChild(scheme) {
    const children = [];
    const slot = scheme.__slot__;
    if (slot && slot.prepend) {
        children.push(`<template slot="prepend">${slot.prepend}</template>`);
    }
    if (slot && slot.append) {
        children.push(`<template slot="append">${slot.append}</template>`);
    }
    return children.join("\n");
}

// el-select 子级
function buildElSelectChild(scheme) {
    const children = [];
    const slot = scheme.__slot__;
    if (slot && slot.options && slot.options.length) {
        children.push(
            `<el-option v-for="(item, index) in ${scheme.__vModel__}Options" :key="index" :label="item.label" :value="item.value" :disabled="item.disabled"></el-option>`
        );
    }
    return children.join("\n");
}

// el-radio-group 子级
function buildElRadioGroupChild(scheme) {
    const children = [];
    const slot = scheme.__slot__;
    const config = scheme.__config__;
    if (slot && slot.options && slot.options.length) {
        const tag = config.optionType === "button" ? "el-radio-button" : "el-radio";
        const border = config.border ? "border" : "";
        children.push(
            `<${tag} v-for="(item, index) in ${scheme.__vModel__}Options" :key="index" :label="item.value" :disabled="item.disabled" ${border}>{{item.label}}</${tag}>`
        );
    }
    return children.join("\n");
}

// el-checkbox-group 子级
function buildElCheckboxGroupChild(scheme) {
    const children = [];
    const slot = scheme.__slot__;
    const config = scheme.__config__;
    if (slot && slot.options && slot.options.length) {
        const tag = config.optionType === "button" ? "el-checkbox-button" : "el-checkbox";
        const border = config.border ? "border" : "";
        children.push(
            `<${tag} v-for="(item, index) in ${scheme.__vModel__}Options" :key="index" :label="item.value" :disabled="item.disabled" ${border}>{{item.label}}</${tag}>`
        );
    }
    return children.join("\n");
}

// el-upload 子级
function buildElUploadChild(scheme) {
    const list = [];
    const config = scheme.__config__;
    if (scheme["list-type"] === "picture-card") list.push('<i class="el-icon-plus"></i>');
    else list.push(`<el-button size="small" type="primary" icon="el-icon-upload">${config.buttonText}</el-button>`);
    if (config.showTip)
        list.push(
            `<div slot="tip" class="el-upload__tip">只能上传不超过 ${config.fileSize}${config.sizeUnit} 的${scheme.accept}文件</div>`
        );
    return list.join("\n");
}

/**
 * 组装html代码。【入口函数】
 * @param {Object} formConfig 整个表单配置
 * @param {String} type 生成类型，文件或弹窗等
 */
export function makeUpHtml(formConfig, type) {
    const htmlList = [];
    confGlobal = formConfig;
    // 判断布局是否都沾满了24个栅格，以备后续简化代码结构
    someSpanIsNot24 = formConfig.fields.some((item) => item.__config__.span !== 24);
    // 遍历渲染每个组件成html
    formConfig.fields.forEach((el) => {
        htmlList.push(layouts[el.__config__.layout](el));
    });
    const htmlStr = htmlList.join("\n");
    // 将组件代码放进form标签
    let temp = buildFormTemplate(formConfig, htmlStr, type);
    // dialog标签包裹代码
    if (type === "dialog") {
        temp = dialogWrapper(temp);
    }
    confGlobal = null;
    return temp;
}